WO2017064772A1 - Connector and wire harness - Google Patents

Connector and wire harness Download PDF

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Publication number
WO2017064772A1
WO2017064772A1 PCT/JP2015/079054 JP2015079054W WO2017064772A1 WO 2017064772 A1 WO2017064772 A1 WO 2017064772A1 JP 2015079054 W JP2015079054 W JP 2015079054W WO 2017064772 A1 WO2017064772 A1 WO 2017064772A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric wire
magnetic core
wire
connector
wire support
Prior art date
Application number
PCT/JP2015/079054
Other languages
French (fr)
Japanese (ja)
Inventor
太一 岡
Original Assignee
日立金属株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日立金属株式会社 filed Critical 日立金属株式会社
Priority to PCT/JP2015/079054 priority Critical patent/WO2017064772A1/en
Priority to JP2017545036A priority patent/JP6458875B2/en
Priority to US15/765,380 priority patent/US10637197B2/en
Publication of WO2017064772A1 publication Critical patent/WO2017064772A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6598—Shield material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/06—Fixed inductances of the signal type  with magnetic core with core substantially closed in itself, e.g. toroid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581—Shield structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7193—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with ferrite filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0045—Cable-harnesses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/06—Fixed inductances of the signal type  with magnetic core with core substantially closed in itself, e.g. toroid
    • H01F2017/065—Core mounted around conductor to absorb noise, e.g. EMI filter
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/25—Magnetic cores made from strips or ribbons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12—End pieces terminating in an eye, hook, or fork
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles

Definitions

  • the present invention relates to a connector and a wire harness.
  • a wire harness that is provided in a vehicle using an electric motor as a drive source and connects an inverter and the electric motor is known.
  • this type of wire harness one provided with a braided shield for reducing electromagnetic noise radiated from the wires of the wire harness is known.
  • Patent Document 1 discloses a wire harness in which a magnetic core made of a ferrite core or the like is provided in addition to a braided shield so that electromagnetic noise radiated from the wire harness by the magnetic core is further reduced.
  • the ferrite core used as a magnetic core in Patent Document 1 has a large size and a large mass. Therefore, it is necessary to fix the ferrite core to the vehicle body or the like, and there is a problem that the degree of freedom of the wiring layout of the wire harness is lowered.
  • an object of the present invention is to provide a connector and a wire harness that can improve the degree of freedom of the routing layout and reduce the number of components while reducing electromagnetic noise.
  • the present invention is a connector provided at an end portion of an electric wire, wherein an insertion hole through which the electric wire is inserted is formed, and the electric wire inserted through the insertion hole is sandwiched.
  • a connector comprising a housing having a wire support portion that is harder than the wire, and an annular magnetic core made of a nanocrystalline soft magnetic material provided around the wire support portion.
  • this invention provides the wire harness provided with the electric wire and the said connector for the purpose of solving the said subject.
  • FIG. 3 is a sectional view taken along line AA in FIG. 2.
  • FIG. 1A is a perspective view showing an appearance of the wire harness according to the present embodiment
  • FIG. 1B is a perspective view in which the braided shield is omitted.
  • the wire harness 1 includes an electric wire 2 and a connector 3 provided at an end of the electric wire 2.
  • the wire harness 1 is mounted on a vehicle such as an electric vehicle or a hybrid vehicle that uses an electric motor as a drive source, and is used to supply a PWM (Pulse Width Modulation) -controlled current output from the inverter to the electric motor. It is done.
  • This current includes a high-frequency component due to switching of a switching element such as a power transistor.
  • the wire harness 1 is configured to use three electric wires 2 and supply a three-phase AC current of U phase, V phase, and W phase to the electric motor.
  • Each electric wire 2 includes a conductor 2a obtained by twisting a plurality of strands made of a good electric conductor, and an insulator 2b made of an insulating resin provided on the outer periphery of the conductor 2a.
  • connection terminal 21 is connected to the end of each electric wire 2.
  • the connection terminal 21 is integrally provided with a caulking portion 21a that is caulked and fixed to an end portion of the conductor 2a, and a plate-like connection portion 21b that extends from the caulking portion 21a.
  • the connecting portion 21b is formed with a bolt fixing connecting hole 21c that penetrates the connecting portion 21b in the thickness direction.
  • the connection terminal 21 is electrically connected to the device-side connection terminal by fixing the connection portion 21b to the corresponding device-side connection terminal provided on the terminal block in the device to be connected (for example, in the inverter) by bolting. Connected to.
  • the braided shield 4 is provided around the three electric wires 2 so as to cover the three electric wires 2 at once.
  • the braided shield 4 is formed, for example, by knitting a plurality of shield wires formed by tin-plating copper.
  • the braided shield 4 is formed by making six shield strands into one strand and crossing the strands in an X shape and knitting them.
  • the braided shield 4 can be expanded and contracted by changing the size of the stitch by, for example, manual work.
  • a corrugated tube for protecting the electric wire 2 may be provided on the outer periphery of the braided shield 4.
  • the corrugated tube is a cylindrical member made of resin and has a bellows shape in which large diameter portions and small diameter portions are alternately formed.
  • FIG. 3 is an exploded perspective view of the connector 3 with the shield shell omitted
  • FIG. 4 is a cross-sectional view taken along line AA in FIG.
  • the connector 3 includes a housing (electric wire holder) 5 made of an insulating resin, a shield shell (shield case) 6 made of a conductive metal, a seal holding member (retainer) 7, It has.
  • the connector 3 is fixed to a casing of a device to be connected (for example, an inverter) and holds an end portion of each electric wire 2.
  • the housing 5 has an insertion hole 51 through which the electric wire 2 is inserted, and has a wire support portion 52 that is harder than the electric wire 2 that sandwiches the electric wire 2 inserted through the insertion hole 51.
  • An annular magnetic core 8 made of a nanocrystalline soft magnetic material is provided around the electric wire support 52. That is, the connector 3 has a built-in magnetic core 8.
  • “hard” means that it is more difficult to bend when it is bent with both ends of the same length (for example, unit length).
  • the electric wire support 52 is formed in a cylindrical shape.
  • three wire support portions 52 are provided corresponding to the three wires 2.
  • the present invention is not limited thereto, and for example, an integrally configured wire support portion having three insertion holes 51 may be provided.
  • the three electric wire support portions 52 are arranged at equal intervals in the direction perpendicular to the longitudinal direction of the electric wire 2 and are configured to hold the three electric wires 2 in an aligned state.
  • the longitudinal direction of the electric wire 2 in the connector 3 is referred to as a length direction
  • the alignment direction of the electric wires 2 is referred to as a width direction
  • a direction perpendicular to the length direction and the width direction is referred to as a height direction.
  • the magnetic core 8 is for reducing electromagnetic noise radiated from the wire harness 1, and is formed in an annular shape so as to cover the three electric wire support portions 52 at once.
  • interval of each electric wire support part 52 is the extent which the magnetic body core 8 can accommodate. It may be necessary to increase the size, which may lead to an increase in size of the connector 3. That is, it contributes to size reduction of the connector 3 by providing the magnetic body core 8 so as to cover the plurality of electric wire support portions 52 collectively.
  • the magnetic core 8 is made of a nanocrystalline soft magnetic material.
  • the nanocrystalline soft magnetic material is a material in which nanocrystalline grains of a ferromagnetic phase are dispersed in the remaining amorphous phase by crystallizing an amorphous alloy.
  • the magnetic body core 8 made of Finemet is made of, for example, a single alloy melt containing Fe (-Si) -B as a basic component and a trace amount of Cu and elements such as Nb, Ta, Mo, Zr added thereto. After an amorphous metal ribbon having a thickness of about 20 ⁇ m is formed by a rapid quenching method such as a roll method, this is formed into a magnetic core shape (here, an annular shape covering the three wire support portions 52 in a lump), and then the crystallization temperature is exceeded. It is formed by heat treatment and crystallization. The crystal grain size in the magnetic core 8 is about 10 nm.
  • a nanocrystalline soft magnetic material other than Finemet (registered trademark) for example, NANOMET (registered trademark) may be used.
  • the nanocrystalline soft magnetic material has a high saturation magnetic flux density and excellent soft magnetic properties (high magnetic permeability and low magnetic core loss properties) as compared with conventionally used soft magnetic materials such as soft ferrite. Therefore, by using a nanocrystalline soft magnetic material as the magnetic core 8, the magnetic core 8 can be downsized. As a result, even when the magnetic core 8 is built in the connector 3, it is possible to suppress an increase in the size of the connector 3 and realize a compact connector 3 while incorporating the magnetic core 8.
  • the size (thickness and length) of the magnetic core 8 may be appropriately set so as to obtain desired characteristics in consideration of the characteristics of the nanocrystalline soft magnetic material to be used.
  • the nanocrystalline soft magnetic material has a characteristic that it can suppress electromagnetic wave noise in the frequency band used for radios such as AM radio, as compared with soft magnetic materials such as soft ferrite conventionally used.
  • radios such as AM radio
  • road information and the like are provided by the AM radio. Therefore, particularly when the wire harness 1 is applied to the vehicle, it can be said that the effect of suppressing electromagnetic wave noise in the frequency band used for the radio is great.
  • the nanocrystalline soft magnetic material has a characteristic that the magnetic characteristics change when an external stress is applied. Therefore, when the magnetic core 8 made of the nanocrystalline soft magnetic material is used, it is necessary to adopt a configuration in which no stress is applied to the magnetic core 8 from the outside.
  • the housing 5 is provided with the wire support portion 52 made of a material harder than the wire 2, and the annular magnetic core 8 made of a nanocrystalline soft magnetic material is provided around the wire support portion 52. It was configured as follows. Thereby, even when the electric wire 2 is bent, no stress is applied to the magnetic core 8, and it is possible to suppress a change in the magnetic characteristics of the magnetic core 8.
  • the magnetic core 8 protrudes in the length direction (longitudinal direction of the electric wire 2) from the electric wire support portion 52, the magnetic core 8 of the protruding portion interferes with the bent electric wire 2, and the magnetic core 8 Since the magnetic characteristics may change, it is desirable that the magnetic core 8 be provided so as not to protrude in the longitudinal direction of the electric wire 2 from the electric wire support portion 52.
  • the magnetic core 8 is longer than the electric wire support part 52 (longitudinal direction of the electric wire 2). Even if it protrudes slightly, there is no possibility that the electric wire 2 interferes with the magnetic core 8. However, as the distance between the electric wire 2 and the magnetic core 8 increases, the circumferential length of the laminated magnetic core 8 increases and the effect of suppressing electromagnetic waves decreases.
  • the thickness of the electric wire support 52 is made smaller (the magnetic core 8 The distance between the magnetic core 8 and the electric wire 2 can be reduced), and the change in the magnetic properties of the magnetic core 8 can be suppressed while the effect of suppressing electromagnetic waves is further increased.
  • the housing 5 has a cylindrical outer wall portion 53 provided so as to cover the wire support portion 52 and the magnetic core 8 so as to sandwich the magnetic core 8 between the housing 5 and the wire support portion 52. And a connecting portion 54 that connects the outer wall portion 53 and the wire support portion 52 closer to the distal end side of the electric wire 2 than the magnetic core 8.
  • the outer wall portion 53 is provided so as to be separated from each electric wire support portion 52 and is provided so as to cover each electric wire support portion 52 in a lump. In the space between the outer wall portion 53 and the electric wire support portion 52, The magnetic core 8 is arranged.
  • the outer wall portion 53 serves to firmly fix the shield shell 6 to the housing 5 and to play a role of suppressing a change in magnetic characteristics of the magnetic core 8 by suppressing external interference with the magnetic core 8. ing.
  • the electric wire support portion 52 and the magnetic core 8 arranged at the center in the width direction are provided so as to be separated from each other.
  • a protrusion projecting outward may be provided on the wire support part 52 disposed in the center of the direction, and the magnetic core 8 may be held between the protrusion and the outer wall part 53.
  • the connecting portion 54 includes a rib-like connecting piece 54 a that connects the center portion and both side portions in the width direction of the electric wire support portion 52 and the outer wall portion 53, and the electric wire support portion 52 and the outer wall portion 53 on the distal end side of the electric wire 2. And a front wall portion 54b provided so as to close the gap between the two.
  • the connecting piece 54 a plays a role of restricting the movement of the magnetic core 8 toward the distal end side of the electric wire 2.
  • the electric wire support part 52, the outer wall part 53, and the connection part 54 are integrally formed and are made of the same material. That is, in the present embodiment, the entire housing 5 including the wire support portion 52, the outer wall portion 53, and the connecting portion 54 is made of an insulating resin material that is harder than the wire 2. However, the present invention is not limited thereto, and at least the wire support portion 52 only needs to be made of a material harder than the wire 2.
  • the housing 5 is made of an insulating resin such as PBT (polybutylene terephthalate), PA (polyamide), or PPS (polyphenylene sulfide), and is formed by, for example, injection molding.
  • the housing 5 is vertically divided at the center in the height direction, and both the divided housings 5 are fixed by a fixing means including a lance 55 and integrated.
  • a shield shell 6 is provided on the outer periphery of the outer wall portion 53 by press-fitting.
  • the shield shell 6 is made of a conductive metal such as iron, brass, or aluminum, for example, and is configured to accommodate at least a part of the housing 5.
  • a plurality of rib-shaped protrusions 53a formed along the length direction are formed at the end of the outer wall 53 on the wire insertion side so as to be spaced apart from each other in the circumferential direction. The shield shell 6 thus formed can be firmly fixed to the housing 5.
  • the shield shell 6 is provided so as to cover the periphery of the outer wall portion 53 of the housing 5 and to protrude outward from the end portion on the distal end side of the cylindrical portion 61, and is connected to the shield shell 6. And a flange portion 62 fixed to the casing of the device (for example, an inverter).
  • a belt-like tightening member 64 is provided on the outer periphery of the shield shell 6, and the braided shield 4 is fixed to the outer periphery of the shield shell 6 by the tightening member 64 and the tubular portion 61 is tightened. 5 is fixed.
  • the end of the shield shell 6 (cylindrical portion 61) on the extension side of the electric wire 2 protrudes inward and prevents the magnetic core 8 from moving toward the extension side of the electric wire 2.
  • a portion 63 is formed.
  • the base end portion of the cylindrical portion 61 is bent inward (reduced in diameter), so that the magnetic core 8 is prevented from falling off the housing 5.
  • the present invention is not limited to this.
  • the retaining portion 63 may be configured by forming a plurality of protrusions protruding inward from the inner peripheral surface of the tubular portion 61.
  • the seal holding member 7 is disposed in a seal holding housing 72 having three insertion holes 71 through which the electric wire 2 is inserted, and a wire seal groove 73 formed along the circumferential direction at the end of the insertion hole 71 on the housing 5 side. And an annular outer peripheral seal member 76 disposed in an outer peripheral seal member groove 75 formed along the circumferential direction on the outer periphery of the housing. In the exploded perspective view of FIG. 3, the wire seal 74 and the outer peripheral seal member 76 are omitted.
  • the wire seal 74 is interposed between the insulator 2b of the electric wire 2 and the seal holding housing 72, and suppresses moisture from entering the device (for example, an inverter) through the electric wire 2.
  • the outer peripheral seal member 76 is interposed between the seal holding housing 72 and the housing of the device (for example, an inverter), and suppresses moisture from entering the device (for example, the inverter) from the outside of the seal holding housing 72.
  • the base end of the seal holding housing 72 is integrally formed with a locking projection 77 protruding toward the base end.
  • the locking projection 77 connects the rectangular parallelepiped head portion 77a, the head portion 77a and the seal holding housing 72, and a shaft portion (neck portion) 77b formed in a rectangular parallelepiped shape having a width and height smaller than the head portion 77a. And are integrated.
  • a locking groove 56 for locking the locking projection 77 is formed in the front wall portion 54 b of the housing 5.
  • the locking groove 56 has a head accommodating portion 56a having a larger width, height, and length than the head 77a that accommodates the head 77a of the locking projection 77, and a width and height smaller than the head 77a.
  • a shaft housing portion 56b that is larger in width and height than the shaft portion 77b and shorter in length than the shaft portion 77b, and the head housing portion 56a opens forward via the shaft portion housing portion 56b. It is configured as follows.
  • the head shell 77a is accommodated in the head accommodating portion 56a
  • the shaft portion 77b is accommodated in the shaft portion accommodating portion 56b
  • the locking projection 77 is locked in the locking groove 56, whereby the shield shell 6 is connected to the device (for example, an inverter).
  • the housing 5 and the seal holding member 7 can be configured to be relatively movable.
  • the seal holding member 7 is movable with respect to the housing 5 in the length direction, the width direction, and the height direction. With this configuration, even if the shield shell 6 or the housing 5 is rotated or inclined due to the bending of the electric wire 2 or the torque when the shield shell 6 is bolted, the seal holding member 7 follows the rotation or inclination. For example, it is possible to prevent the waterproof function from being lost due to excessive crushing of only a part of the outer peripheral seal member 76, for example.
  • the insertion hole 51 through which the electric wire 2 is inserted is formed, and the electric wire support portion 52 that is harder than the electric wire 2 that sandwiches the electric wire 2 inserted through the insertion hole 51.
  • an annular magnetic core 8 made of a nanocrystalline soft magnetic material provided around the electric wire support 52.
  • the magnetic core 8 made of a nanocrystalline soft magnetic material, the magnetic core 8 is downsized compared to the conventionally used ferrite core and the like, and the connector 3 is made magnetic without increasing the size of the connector 3. It becomes possible to mount the body core 8.
  • the magnetic core 8 is prevented from being loaded when the electric wire 2 is bent. It is possible to suppress a change in the magnetic characteristics of the.
  • the magnetic core 8 By incorporating the magnetic core 8 in the connector 3, it is not necessary to fix the magnetic core to the vehicle body or the like as in the case where a magnetic core made of a ferrite core or the like is provided outside the connector 3 as in the prior art. Therefore, it becomes possible to improve the freedom degree of the layout of the wire harness 1. In addition, since a dedicated fixing member for fixing the magnetic body core such as a ferrite core to the vehicle body or the like is not required, the number of parts can be reduced and workability when attaching the wire harness 1 can be improved.
  • a connector (3) provided at an end of an electric wire (2), wherein an insertion hole (51) through which the electric wire (2) is inserted is formed, and the insertion hole (51) is inserted through the insertion hole (51).
  • a housing (5) having a wire support portion (52) that is harder than the wire (2) that sandwiches the wire (2), and a ring made of a nanocrystalline soft magnetic material provided around the wire support portion (52)
  • a magnetic core (8) a connector (3).
  • the housing (5) includes the electric wire support (52) and the magnetic core (8) so as to sandwich the magnetic core (8) between the electric wire support (52).
  • a cylindrical outer wall portion (53) provided to cover the outer wall portion (53) and the electric wire support portion (52) on the distal end side of the electric wire (2) with respect to the magnetic core (8).
  • the connector (3) according to [1] or [2], including a connecting portion (54) to be connected.
  • the housing (5) includes a plurality of the wire support portions (52), and is configured to support the plurality of wire (2) by the plurality of wire support portions (52).
  • the connector (3) according to any one of [1] to [4], wherein the connector (3) is provided so as to collectively cover the plurality of electric wire support portions (52).
  • a wire harness (1) comprising an electric wire (2) and the connector (3) according to any one of [1] to [5].
  • the magnetic core 8 is disposed in the space between the electric wire support portion 52 and the outer wall portion 53 of the housing 5, but the present invention is not limited thereto. And the cylindrical portion 61 of the shield shell 6 may be sandwiched. However, since the outer wall portion 53 functions to hold the shield shell 6 that is press-fitted, when the shield shell 6 is provided by press-fitting, the magnetic core 8 is disposed between the wire support portion 52 and the outer wall portion 53. It is desirable to do.
  • the number of the electric wires 2 is not limited,
  • the number of the electric wires 2 may be one, two, or four or more. .

Abstract

[Problem] To provide a connector and a wire harness such that the degree of freedom for routing layouts can be improved and the number of components can be reduced while also reducing electromagnetic noises. [Solution] This connector 3 is to be installed at an extremity portion of a wire 2, and includes: a housing 5 having formed therein an insertion hole 51 whereinto the wire 2 is inserted, and a wire-supporting portion 52, which is stiffer than the wire 2, for holding the wire 2 that has been inserted in the insertion hole 51; and a ring-shaped magnetic body core 8 comprising a nano-crystal soft-magnetic material, and provided in the periphery of the wire supporting portion 52.

Description

コネクタ及びワイヤハーネスConnector and wire harness
　本発明は、コネクタ及びワイヤハーネスに関する。 The present invention relates to a connector and a wire harness.
　従来、例えば電動モータを駆動源とする車両に設けられ、インバータと電動モータとを接続するワイヤハーネスが知られている。この種のワイヤハーネスとして、ワイヤハーネスの電線から放射される電磁ノイズを低減するための編組シールドが設けられたものが知られている。 Conventionally, for example, a wire harness that is provided in a vehicle using an electric motor as a drive source and connects an inverter and the electric motor is known. As this type of wire harness, one provided with a braided shield for reducing electromagnetic noise radiated from the wires of the wire harness is known.
　特許文献１では、編組シールドに加えて、フェライトコア等からなる磁性体コアを設けることで、当該磁性体コアによりワイヤハーネスから放射される電磁ノイズをより低減したワイヤハーネスが開示されている。 Patent Document 1 discloses a wire harness in which a magnetic core made of a ferrite core or the like is provided in addition to a braided shield so that electromagnetic noise radiated from the wire harness by the magnetic core is further reduced.
特開２０１４－１３０７０８号公報JP 2014-130708 A
　しかしながら、特許文献１で磁性体コアとして用いているフェライトコアは、サイズが大きく、また質量が大きい。そのため、フェライトコアを車体等に固定する必要が生じ、ワイヤハーネスの配策レイアウトの自由度が低下してしまうという課題がある。 However, the ferrite core used as a magnetic core in Patent Document 1 has a large size and a large mass. Therefore, it is necessary to fix the ferrite core to the vehicle body or the like, and there is a problem that the degree of freedom of the wiring layout of the wire harness is lowered.
　また、フェライトコアを車体等に固定するための専用の固定部材が必要となり、部品点数が増加し、ワイヤハーネスを取り付ける際の作業性も低下してしまうという課題がある。 Also, there is a problem that a dedicated fixing member for fixing the ferrite core to the vehicle body or the like is required, the number of parts is increased, and workability when the wire harness is attached is lowered.
　そこで、本発明は、電磁ノイズを低減しつつも、配策レイアウトの自由度を向上でき、かつ部品点数を抑えることが可能なコネクタ及びワイヤハーネスを提供することを目的とする。 Therefore, an object of the present invention is to provide a connector and a wire harness that can improve the degree of freedom of the routing layout and reduce the number of components while reducing electromagnetic noise.
　本発明は、上記課題を解決することを目的として、電線の端部に設けられるコネクタであって、前記電線が挿通される挿通孔が形成され、前記挿通孔に挿通された前記電線を挟持する前記電線よりも硬い電線支持部を有するハウジングと、前記電線支持部の周囲に設けられたナノ結晶軟磁性材料からなる環状の磁性体コアと、を備えた、コネクタを提供する。 In order to solve the above-mentioned problem, the present invention is a connector provided at an end portion of an electric wire, wherein an insertion hole through which the electric wire is inserted is formed, and the electric wire inserted through the insertion hole is sandwiched. There is provided a connector comprising a housing having a wire support portion that is harder than the wire, and an annular magnetic core made of a nanocrystalline soft magnetic material provided around the wire support portion.
　また、本発明は、上記課題を解決することを目的として、電線と、前記コネクタと、を備えた、ワイヤハーネスを提供する。 Moreover, this invention provides the wire harness provided with the electric wire and the said connector for the purpose of solving the said subject.
　本発明によれば、電磁ノイズを低減しつつも、配策レイアウトの自由度を向上でき、かつ部品点数を抑えることが可能なコネクタ及びワイヤハーネスを提供できる。 According to the present invention, it is possible to provide a connector and a wire harness that can improve the degree of freedom of the layout layout and reduce the number of components while reducing electromagnetic noise.
本発明の一実施の形態に係るワイヤハーネスの外観を示す斜視図である。It is a perspective view which shows the external appearance of the wire harness which concerns on one embodiment of this invention. 図１Ａにおいて編組シールドを省略した斜視図である。It is the perspective view which abbreviate | omitted the braided shield in FIG. 1A. コネクタの斜視図である。It is a perspective view of a connector. コネクタの分解斜視図である。It is a disassembled perspective view of a connector. 図２のＡ－Ａ線断面図である。FIG. 3 is a sectional view taken along line AA in FIG. 2.
［実施の形態］
　以下、本発明の実施の形態を添付図面にしたがって説明する。 [Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
（ワイヤハーネスの全体構造の説明）
　図１Ａは、本実施の形態に係るワイヤハーネスの外観を示す斜視図、図１Ｂはその編組シールドを省略した斜視図である。 (Description of the overall structure of the wire harness)
FIG. 1A is a perspective view showing an appearance of the wire harness according to the present embodiment, and FIG. 1B is a perspective view in which the braided shield is omitted.
　図１Ａおよび図１Ｂに示すように、ワイヤハーネス１は、電線２と、電線２の端部に設けられたコネクタ３と、を備えている。 As shown in FIGS. 1A and 1B, the wire harness 1 includes an electric wire 2 and a connector 3 provided at an end of the electric wire 2.
　ワイヤハーネス１は、例えば、電動モータを駆動源とする電気自動車やハイブリッド車等の車両に搭載され、電動モータにインバータから出力されるＰＷＭ（Ｐｕｌｓｅ　Ｗｉｄｔｈ　Ｍｏｄｕｌａｔｉｏｎ）制御された電流を供給するために用いられる。この電流には、パワートランジスタ等のスイッチング素子のスイッチングによる高周波成分が含まれる。 For example, the wire harness 1 is mounted on a vehicle such as an electric vehicle or a hybrid vehicle that uses an electric motor as a drive source, and is used to supply a PWM (Pulse Width Modulation) -controlled current output from the inverter to the electric motor. It is done. This current includes a high-frequency component due to switching of a switching element such as a power transistor.
　本実施の形態では、ワイヤハーネス１は、３本の電線２を用い、Ｕ相、Ｖ相、およびＷ相の三相交流電流を電動モータに供給するように構成されている。 In this embodiment, the wire harness 1 is configured to use three electric wires 2 and supply a three-phase AC current of U phase, V phase, and W phase to the electric motor.
　各電線２は、電気良導体からなる素線を複数撚り合わせた導体２ａと、導体２ａの外周に設けられた絶縁性樹脂からなる絶縁体２ｂと、をそれぞれ備えている。 Each electric wire 2 includes a conductor 2a obtained by twisting a plurality of strands made of a good electric conductor, and an insulator 2b made of an insulating resin provided on the outer periphery of the conductor 2a.
　各電線２の端部には、接続端子２１がそれぞれ接続されている。接続端子２１は、導体２ａの端部にかしめ固定されるかしめ部２１ａと、かしめ部２１ａから延出された板状の接続部２１ｂと、を一体に備えている。接続部２１ｂには、接続部２１ｂを厚さ方向に貫通するボルト固定用の接続穴２１ｃが形成されている。接続端子２１は、接続対象となる機器内（例えばインバータ内）の端子台に設けられた対応する機器側接続端子に、接続部２１ｂをボルト固定により固定することで、機器側接続端子に電気的に接続される。 A connection terminal 21 is connected to the end of each electric wire 2. The connection terminal 21 is integrally provided with a caulking portion 21a that is caulked and fixed to an end portion of the conductor 2a, and a plate-like connection portion 21b that extends from the caulking portion 21a. The connecting portion 21b is formed with a bolt fixing connecting hole 21c that penetrates the connecting portion 21b in the thickness direction. The connection terminal 21 is electrically connected to the device-side connection terminal by fixing the connection portion 21b to the corresponding device-side connection terminal provided on the terminal block in the device to be connected (for example, in the inverter) by bolting. Connected to.
　３本の電線２の周囲には、３本の電線２を一括して覆うように編組シールド４が設けられる。編組シールド４は、例えば銅を錫メッキしてなる複数のシールド素線を編み合わせて形成される。ここでは、６本のシールド素線を１本の素線束とし、この素線束同士をＸ字状にクロスさせて編み合わせることにより、編組シールド４を形成している。この編組シールド４は、例えば手作業によって編み目の大きさを変えることで、内径を拡大および収縮させることが可能である。 The braided shield 4 is provided around the three electric wires 2 so as to cover the three electric wires 2 at once. The braided shield 4 is formed, for example, by knitting a plurality of shield wires formed by tin-plating copper. Here, the braided shield 4 is formed by making six shield strands into one strand and crossing the strands in an X shape and knitting them. The braided shield 4 can be expanded and contracted by changing the size of the stitch by, for example, manual work.
　図示していないが、編組シールド４の外周には、電線２の保護用のコルゲートチューブが設けられていてもよい。コルゲートチューブは、樹脂からなる筒状部材であり、大径部と小径部とが交互に形成された蛇腹状となっている。 Although not shown, a corrugated tube for protecting the electric wire 2 may be provided on the outer periphery of the braided shield 4. The corrugated tube is a cylindrical member made of resin and has a bellows shape in which large diameter portions and small diameter portions are alternately formed.
（コネクタ３の説明）
　図２は、コネクタ３の斜視図であり、図３は、シールドシェルを省略したコネクタ３の分解斜視図、図４は図２のＡ－Ａ線断面図である。 (Description of connector 3)
2 is a perspective view of the connector 3, FIG. 3 is an exploded perspective view of the connector 3 with the shield shell omitted, and FIG. 4 is a cross-sectional view taken along line AA in FIG.
　図２～４に示すように、コネクタ３は、絶縁性樹脂からなるハウジング（電線ホルダ）５と、導電性の金属からなるシールドシェル（シールドケース）６と、シール保持部材（リテーナ）７と、を備えている。コネクタ３は、接続対象となる機器（例えばインバータ）の筐体に固定され、各電線２の端部を保持するものである。 As shown in FIGS. 2 to 4, the connector 3 includes a housing (electric wire holder) 5 made of an insulating resin, a shield shell (shield case) 6 made of a conductive metal, a seal holding member (retainer) 7, It has. The connector 3 is fixed to a casing of a device to be connected (for example, an inverter) and holds an end portion of each electric wire 2.
　本実施の形態に係るコネクタ３では、ハウジング５は、電線２が挿通される挿通孔５１が形成され、挿通孔５１に挿通された電線２を挟持する電線２よりも硬い電線支持部５２を有しており、この電線支持部５２の周囲に、ナノ結晶軟磁性材料からなる環状の磁性体コア８を設けて構成されている。すなわち、コネクタ３は、磁性体コア８を内蔵している。なお、ここで言う「硬い」とは、同じ長さ（例えば単位長さ）のものに対して両端を持って屈曲させようとしたときに、より曲がりにくいことを意味している。 In the connector 3 according to the present embodiment, the housing 5 has an insertion hole 51 through which the electric wire 2 is inserted, and has a wire support portion 52 that is harder than the electric wire 2 that sandwiches the electric wire 2 inserted through the insertion hole 51. An annular magnetic core 8 made of a nanocrystalline soft magnetic material is provided around the electric wire support 52. That is, the connector 3 has a built-in magnetic core 8. Here, “hard” means that it is more difficult to bend when it is bent with both ends of the same length (for example, unit length).
　電線支持部５２は、円筒状に形成されている。ここでは、３本の電線２に対応して、３つの電線支持部５２が備えられている。なお、これに限らず、例えば、３つの挿通孔５１を有する一体構成の電線支持部を備えるようにしてもよい。３つの電線支持部５２は、電線２の長手方向に対して垂直方向に等間隔に整列配置されており、３つの電線２を整列した状態で保持するように構成されている。以下、コネクタ３における電線２の長手方向を長さ方向、電線２の整列方向を幅方向、長さ方向と幅方向に垂直な方向を高さ方向と呼称する。 The electric wire support 52 is formed in a cylindrical shape. Here, three wire support portions 52 are provided corresponding to the three wires 2. However, the present invention is not limited thereto, and for example, an integrally configured wire support portion having three insertion holes 51 may be provided. The three electric wire support portions 52 are arranged at equal intervals in the direction perpendicular to the longitudinal direction of the electric wire 2 and are configured to hold the three electric wires 2 in an aligned state. Hereinafter, the longitudinal direction of the electric wire 2 in the connector 3 is referred to as a length direction, the alignment direction of the electric wires 2 is referred to as a width direction, and a direction perpendicular to the length direction and the width direction is referred to as a height direction.
　磁性体コア８は、ワイヤハーネス１から放射される電磁ノイズを低減させるためのものであり、３つの電線支持部５２を一括して覆うように環状に形成されている。なお、各電線支持部５２を個別に覆うように複数の磁性体コア８を設けるように構成してもよいが、この場合、各電線支持部５２の間隔を磁性体コア８が収容できる程度に大きくする必要が生じ、コネクタ３の大型化につながる場合がある。つまり、複数の電線支持部５２を一括して覆うように磁性体コア８を設けるように構成することで、コネクタ３の小型化に寄与する。 The magnetic core 8 is for reducing electromagnetic noise radiated from the wire harness 1, and is formed in an annular shape so as to cover the three electric wire support portions 52 at once. In addition, although you may comprise so that the some magnetic body core 8 may be provided so that each electric wire support part 52 may be covered separately, in this case, the space | interval of each electric wire support part 52 is the extent which the magnetic body core 8 can accommodate. It may be necessary to increase the size, which may lead to an increase in size of the connector 3. That is, it contributes to size reduction of the connector 3 by providing the magnetic body core 8 so as to cover the plurality of electric wire support portions 52 collectively.
　本実施の形態では、磁性体コア８は、ナノ結晶軟磁性材料から構成される。ナノ結晶軟磁性材料とは、アモルファス合金を結晶化することにより、強磁性相のナノ結晶粒を残存するアモルファス相に分散させた材料である。 In the present embodiment, the magnetic core 8 is made of a nanocrystalline soft magnetic material. The nanocrystalline soft magnetic material is a material in which nanocrystalline grains of a ferromagnetic phase are dispersed in the remaining amorphous phase by crystallizing an amorphous alloy.
　ここでは、ナノ結晶軟磁性材料として、ファインメット（登録商標）を用いた。ファインメット（登録商標）からなる磁性体コア８は、例えば、Ｆｅ（－Ｓｉ）－Ｂを基本成分としこれに微量のＣｕとＮｂ，Ｔａ，Ｍｏ，Ｚｒ等の元素を添加した合金溶湯を単ロール法等の超急冷法により一旦厚さ約２０μｍのアモルファス金属薄帯とし、これを磁心形状（ここでは３つの電線支持部５２を一括して覆う環状）に成形した後、結晶化温度以上で熱処理し結晶化させることにより形成される。磁性体コア８における結晶粒径は約１０ｎｍである。なお、磁性体コア８として、ファインメット（登録商標）以外のナノ結晶軟磁性材料、例えばＮＡＮＯＭＥＴ（登録商標）を用いてもよい。 Here, Finemet (registered trademark) was used as the nanocrystalline soft magnetic material. The magnetic body core 8 made of Finemet (registered trademark) is made of, for example, a single alloy melt containing Fe (-Si) -B as a basic component and a trace amount of Cu and elements such as Nb, Ta, Mo, Zr added thereto. After an amorphous metal ribbon having a thickness of about 20 μm is formed by a rapid quenching method such as a roll method, this is formed into a magnetic core shape (here, an annular shape covering the three wire support portions 52 in a lump), and then the crystallization temperature is exceeded. It is formed by heat treatment and crystallization. The crystal grain size in the magnetic core 8 is about 10 nm. As the magnetic core 8, a nanocrystalline soft magnetic material other than Finemet (registered trademark), for example, NANOMET (registered trademark) may be used.
　ナノ結晶軟磁性材料は、従来用いられていたソフトフェライト等の軟磁性材料と比較して、高い飽和磁束密度と優れた軟磁気特性（高透磁率・低磁心損失特性）を有している。よって、磁性体コア８としてナノ結晶軟磁性材料を用いることで、磁性体コア８の小型化が可能になる。その結果、磁性体コア８をコネクタ３に内蔵した場合でも、コネクタ３の大型化を抑制し、磁性体コア８を内蔵しつつもコンパクトなコネクタ３を実現することが可能になる。磁性体コア８の大きさ（厚さおよび長さ）は、使用するナノ結晶軟磁性材料の特性等を考慮し、所望の特性が得られるよう適宜設定すればよい。 The nanocrystalline soft magnetic material has a high saturation magnetic flux density and excellent soft magnetic properties (high magnetic permeability and low magnetic core loss properties) as compared with conventionally used soft magnetic materials such as soft ferrite. Therefore, by using a nanocrystalline soft magnetic material as the magnetic core 8, the magnetic core 8 can be downsized. As a result, even when the magnetic core 8 is built in the connector 3, it is possible to suppress an increase in the size of the connector 3 and realize a compact connector 3 while incorporating the magnetic core 8. The size (thickness and length) of the magnetic core 8 may be appropriately set so as to obtain desired characteristics in consideration of the characteristics of the nanocrystalline soft magnetic material to be used.
　また、ナノ結晶軟磁性材料は、従来用いられていたソフトフェライト等の軟磁性材料と比較して、ＡＭラジオ等のラジオに使用される周波数帯の電磁波ノイズを抑制可能であるという特性もある。車両では、道路情報等をＡＭラジオにより提供しているため、特にワイヤハーネス１を車両に適用する場合には、ラジオに使用される周波数帯域で電磁波ノイズを抑制できる効果は大きいといえる。 Also, the nanocrystalline soft magnetic material has a characteristic that it can suppress electromagnetic wave noise in the frequency band used for radios such as AM radio, as compared with soft magnetic materials such as soft ferrite conventionally used. In the vehicle, road information and the like are provided by the AM radio. Therefore, particularly when the wire harness 1 is applied to the vehicle, it can be said that the effect of suppressing electromagnetic wave noise in the frequency band used for the radio is great.
　ただし、ナノ結晶軟磁性材料は外部から応力が加わると磁気特性が変化するという特性を有している。そのため、ナノ結晶軟磁性材料からなる磁性体コア８を用いる場合、磁性体コア８に外部から応力が加わらないような構成とする必要が生じる。 However, the nanocrystalline soft magnetic material has a characteristic that the magnetic characteristics change when an external stress is applied. Therefore, when the magnetic core 8 made of the nanocrystalline soft magnetic material is used, it is necessary to adopt a configuration in which no stress is applied to the magnetic core 8 from the outside.
　そこで、本実施の形態では、ハウジング５に電線２よりも硬い材料からなる電線支持部５２を設け、その電線支持部５２の周囲に、ナノ結晶軟磁性材料からなる環状の磁性体コア８を設けるように構成した。これにより、電線２を屈曲させた際にも磁性体コア８に応力が付与されなくなり、磁性体コア８の磁気特性の変化を抑制することが可能になる。 Therefore, in the present embodiment, the housing 5 is provided with the wire support portion 52 made of a material harder than the wire 2, and the annular magnetic core 8 made of a nanocrystalline soft magnetic material is provided around the wire support portion 52. It was configured as follows. Thereby, even when the electric wire 2 is bent, no stress is applied to the magnetic core 8, and it is possible to suppress a change in the magnetic characteristics of the magnetic core 8.
　磁性体コア８が電線支持部５２よりも長さ方向（電線２の長手方向）に突出していると、当該突出した部分の磁性体コア８が屈曲された電線２に干渉して磁性体コア８磁気特性が変化してしまう場合があるため、磁性体コア８は、電線支持部５２よりも電線２の長手方向に突出しないように設けられることが望ましい。 When the magnetic core 8 protrudes in the length direction (longitudinal direction of the electric wire 2) from the electric wire support portion 52, the magnetic core 8 of the protruding portion interferes with the bent electric wire 2, and the magnetic core 8 Since the magnetic characteristics may change, it is desirable that the magnetic core 8 be provided so as not to protrude in the longitudinal direction of the electric wire 2 from the electric wire support portion 52.
　なお、電線支持部５２を厚く形成した場合には、磁性体コア８と電線２との距離が大きくなるため、磁性体コア８が電線支持部５２よりも長さ方向（電線２の長手方向）に若干突出していても、電線２が磁性体コア８に干渉するおそれはなくなる。しかし、電線２と磁性体コア８との距離が大きくなるほど、積層された磁性体コア８の周長が長くなり電磁波抑制の効果が小さくなってしまう。すなわち、本実施の形態のように、磁性体コア８を電線支持部５２よりも電線２の長手方向に突出しないように設けることで、電線支持部５２の厚さをより小さく（磁性体コア８と電線２との距離をより小さく）し、電磁波抑制の効果をより高めつつも、磁性体コア８の磁気特性の変化を抑制可能になる。 In addition, when the electric wire support part 52 is formed thickly, since the distance between the magnetic core 8 and the electric wire 2 is increased, the magnetic core 8 is longer than the electric wire support part 52 (longitudinal direction of the electric wire 2). Even if it protrudes slightly, there is no possibility that the electric wire 2 interferes with the magnetic core 8. However, as the distance between the electric wire 2 and the magnetic core 8 increases, the circumferential length of the laminated magnetic core 8 increases and the effect of suppressing electromagnetic waves decreases. That is, by providing the magnetic core 8 so as not to protrude in the longitudinal direction of the electric wire 2 from the electric wire support 52 as in the present embodiment, the thickness of the electric wire support 52 is made smaller (the magnetic core 8 The distance between the magnetic core 8 and the electric wire 2 can be reduced), and the change in the magnetic properties of the magnetic core 8 can be suppressed while the effect of suppressing electromagnetic waves is further increased.
　本実施の形態では、ハウジング５は、電線支持部５２との間で磁性体コア８を挟み込むように、電線支持部５２と磁性体コア８とを覆うように設けられた筒状の外壁部５３と、磁性体コア８よりも電線２の先端側で外壁部５３と電線支持部５２とを連結する連結部５４と、をさらに備えている。 In the present embodiment, the housing 5 has a cylindrical outer wall portion 53 provided so as to cover the wire support portion 52 and the magnetic core 8 so as to sandwich the magnetic core 8 between the housing 5 and the wire support portion 52. And a connecting portion 54 that connects the outer wall portion 53 and the wire support portion 52 closer to the distal end side of the electric wire 2 than the magnetic core 8.
　外壁部５３は、各電線支持部５２と離間して設けられ、各電線支持部５２を一括して覆うように設けられており、この外壁部５３と電線支持部５２との間の空間に、磁性体コア８が配置されることになる。外壁部５３は、シールドシェル６をハウジング５に強固に固定する役割と、磁性体コア８への外部からの干渉を抑制して磁性体コア８の磁気特性の変化を抑制する役割と、を兼ねている。 The outer wall portion 53 is provided so as to be separated from each electric wire support portion 52 and is provided so as to cover each electric wire support portion 52 in a lump. In the space between the outer wall portion 53 and the electric wire support portion 52, The magnetic core 8 is arranged. The outer wall portion 53 serves to firmly fix the shield shell 6 to the housing 5 and to play a role of suppressing a change in magnetic characteristics of the magnetic core 8 by suppressing external interference with the magnetic core 8. ing.
　なお、本実施の形態では、幅方向の中央に配置される電線支持部５２と磁性体コア８とが離間するように設けられているが、磁性体コア８をより強固に保持するため、幅方向の中央に配置される電線支持部５２に外方に突出する突起を設け、当該突起と外壁部５３との間で磁性体コア８を保持するように構成してもよい。 In the present embodiment, the electric wire support portion 52 and the magnetic core 8 arranged at the center in the width direction are provided so as to be separated from each other. However, in order to hold the magnetic core 8 more firmly, A protrusion projecting outward may be provided on the wire support part 52 disposed in the center of the direction, and the magnetic core 8 may be held between the protrusion and the outer wall part 53.
　連結部５４は、電線支持部５２の幅方向の中央部および両側部と外壁部５３とをそれぞれ連結するリブ状の連結片５４ａと、電線２の先端側にて電線支持部５２と外壁部５３との間を塞ぐように設けられる前壁部５４ｂと、を有している。連結片５４ａは、電線２の先端側への磁性体コア８の移動を規制する役割を果たしている。 The connecting portion 54 includes a rib-like connecting piece 54 a that connects the center portion and both side portions in the width direction of the electric wire support portion 52 and the outer wall portion 53, and the electric wire support portion 52 and the outer wall portion 53 on the distal end side of the electric wire 2. And a front wall portion 54b provided so as to close the gap between the two. The connecting piece 54 a plays a role of restricting the movement of the magnetic core 8 toward the distal end side of the electric wire 2.
　電線支持部５２と外壁部５３と連結部５４は、一体に形成されており、同じ材料で構成されている。すなわち、本実施の形態では、電線支持部５２と外壁部５３と連結部５４とを含むハウジング５の全体が、電線２よりも硬い絶縁性樹脂材料から構成されている。ただし、これに限らず、少なくとも、電線支持部５２が電線２よりも硬い材料から構成されていればよい。ハウジング５は、例えば、ＰＢＴ（ポリブチレンテレフタレート）やＰＡ（ポリアミド）、あるいはＰＰＳ（ポリフェニレンサルファイド）等の絶縁性樹脂からなり、例えば射出成形により形成される。 The electric wire support part 52, the outer wall part 53, and the connection part 54 are integrally formed and are made of the same material. That is, in the present embodiment, the entire housing 5 including the wire support portion 52, the outer wall portion 53, and the connecting portion 54 is made of an insulating resin material that is harder than the wire 2. However, the present invention is not limited thereto, and at least the wire support portion 52 only needs to be made of a material harder than the wire 2. The housing 5 is made of an insulating resin such as PBT (polybutylene terephthalate), PA (polyamide), or PPS (polyphenylene sulfide), and is formed by, for example, injection molding.
　また、本実施の形態では、ハウジング５を高さ方向における中央部で上下に分割し、分割された両ハウジング５を、ランス５５を含む固定手段により固定し一体化するように構成されている。 Further, in the present embodiment, the housing 5 is vertically divided at the center in the height direction, and both the divided housings 5 are fixed by a fixing means including a lance 55 and integrated.
　外壁部５３の外周には、圧入によりシールドシェル６が設けられる。シールドシェル６は、例えば鉄や黄銅、あるいはアルミニウム等の導電性の金属からなり、ハウジング５の少なくとも一部を収容するように構成されている。外壁部５３の外周の電線挿入側の端部には、長さ方向に沿って形成されたリブ状の突起部５３ａが周方向に離間して複数形成されており、この突起部５３ａにより、圧入されたシールドシェル６をハウジング５に強固に固定できるように構成されている。 A shield shell 6 is provided on the outer periphery of the outer wall portion 53 by press-fitting. The shield shell 6 is made of a conductive metal such as iron, brass, or aluminum, for example, and is configured to accommodate at least a part of the housing 5. A plurality of rib-shaped protrusions 53a formed along the length direction are formed at the end of the outer wall 53 on the wire insertion side so as to be spaced apart from each other in the circumferential direction. The shield shell 6 thus formed can be firmly fixed to the housing 5.
　シールドシェル６は、ハウジング５の外壁部５３の周囲を覆うように設けられた筒状部６１と、筒状部６１の先端側の端部から外方に突出するように設けられ、接続対象の機器（例えばインバータ）の筐体に固定されるフランジ部６２と、を有している。シールドシェル６の外周には、帯状の締付部材６４が設けられており、この締付部材６４により、編組シールド４がシールドシェル６の外周に固定されると共に、筒状部６１が締め付けられハウジング５に固定されている。 The shield shell 6 is provided so as to cover the periphery of the outer wall portion 53 of the housing 5 and to protrude outward from the end portion on the distal end side of the cylindrical portion 61, and is connected to the shield shell 6. And a flange portion 62 fixed to the casing of the device (for example, an inverter). A belt-like tightening member 64 is provided on the outer periphery of the shield shell 6, and the braided shield 4 is fixed to the outer periphery of the shield shell 6 by the tightening member 64 and the tubular portion 61 is tightened. 5 is fixed.
　本実施の形態では、シールドシェル６（筒状部６１）の電線２の延出側の端部に、内方に突出し磁性体コア８の電線２の延出側への移動を規制する抜け止め部６３が形成されている。ここでは、筒状部６１の基端部を内側に曲げる（縮径させる）ことで、磁性体コア８のハウジング５からの脱落を抑制するように構成している。なお、これに限らず、例えば、筒状部６１の内周面から内方に突出する突起を複数形成することで、抜け止め部６３を構成してもよい。 In the present embodiment, the end of the shield shell 6 (cylindrical portion 61) on the extension side of the electric wire 2 protrudes inward and prevents the magnetic core 8 from moving toward the extension side of the electric wire 2. A portion 63 is formed. Here, the base end portion of the cylindrical portion 61 is bent inward (reduced in diameter), so that the magnetic core 8 is prevented from falling off the housing 5. However, the present invention is not limited to this. For example, the retaining portion 63 may be configured by forming a plurality of protrusions protruding inward from the inner peripheral surface of the tubular portion 61.
　シール保持部材７は、電線２を挿通する３つの挿通孔７１を有するシール保持ハウジング７２と、挿通孔７１のハウジング５側の端部に周方向に沿って形成されたワイヤシール用溝７３に配置された環状のワイヤシール７４と、ハウジングの外周に周方向に沿って形成された外周シール部材用溝７５に配置された環状の外周シール部材７６と、を備えている。なお、図３の分解斜視図では、ワイヤシール７４と外周シール部材７６とを省略して示している。 The seal holding member 7 is disposed in a seal holding housing 72 having three insertion holes 71 through which the electric wire 2 is inserted, and a wire seal groove 73 formed along the circumferential direction at the end of the insertion hole 71 on the housing 5 side. And an annular outer peripheral seal member 76 disposed in an outer peripheral seal member groove 75 formed along the circumferential direction on the outer periphery of the housing. In the exploded perspective view of FIG. 3, the wire seal 74 and the outer peripheral seal member 76 are omitted.
　ワイヤシール７４は、電線２の絶縁体２ｂとシール保持ハウジング７２との間に介在し、電線２を伝って機器（例えばインバータ）内に水分が侵入することを抑制する。外周シール部材７６は、シール保持ハウジング７２と機器（例えばインバータ）の筐体との間に介在し、シール保持ハウジング７２の外側から機器（例えばインバータ）内に水分が侵入することを抑制する。 The wire seal 74 is interposed between the insulator 2b of the electric wire 2 and the seal holding housing 72, and suppresses moisture from entering the device (for example, an inverter) through the electric wire 2. The outer peripheral seal member 76 is interposed between the seal holding housing 72 and the housing of the device (for example, an inverter), and suppresses moisture from entering the device (for example, the inverter) from the outside of the seal holding housing 72.
　シール保持ハウジング７２の基端部には、基端側に突出する係止突起７７が一体に形成されている。係止突起７７は、直方体形状の頭部７７ａと、頭部７７ａとシール保持ハウジング７２とを連結し、頭部７７ａよりも幅および高さが小さい直方体形状に形成された軸部（頚部）７７ｂと、を一体に有している。 The base end of the seal holding housing 72 is integrally formed with a locking projection 77 protruding toward the base end. The locking projection 77 connects the rectangular parallelepiped head portion 77a, the head portion 77a and the seal holding housing 72, and a shaft portion (neck portion) 77b formed in a rectangular parallelepiped shape having a width and height smaller than the head portion 77a. And are integrated.
　ハウジング５の前壁部５４ｂには、係止突起７７を係止する係止溝５６が形成されている。係止溝５６は、係止突起７７の頭部７７ａを収容する頭部７７ａよりも幅および高さおよび長さが大きい頭部収容部５６ａと、頭部７７ａよりも幅および高さが小さく、軸部７７ｂよりも幅および高さ大きく、かつ軸部７７ｂよりも長さが短い軸部収容部５６ｂと、を有し、頭部収容部５６ａが軸部収容部５６ｂを介して前方に開口するように構成されている。 A locking groove 56 for locking the locking projection 77 is formed in the front wall portion 54 b of the housing 5. The locking groove 56 has a head accommodating portion 56a having a larger width, height, and length than the head 77a that accommodates the head 77a of the locking projection 77, and a width and height smaller than the head 77a. A shaft housing portion 56b that is larger in width and height than the shaft portion 77b and shorter in length than the shaft portion 77b, and the head housing portion 56a opens forward via the shaft portion housing portion 56b. It is configured as follows.
　頭部７７ａを頭部収容部５６ａに、軸部７７ｂを軸部収容部５６ｂに収容して係止突起７７を係止溝５６に係止することで、シールドシェル６を機器（例えばインバータ）の筐体に固定する際に、ハウジング５とシール保持部材７とを相対移動可能に構成することが可能になる。本実施の形態では、シール保持部材７は、ハウジング５に対して、長さ方向、幅方向、および高さ方向に移動可動である。このように構成することで、電線２の屈曲やシールドシェル６をボルト固定する際のトルクによりシールドシェル６やハウジング５が回転あるいは傾斜しても、当該回転あるいは傾斜にシール保持部材７が追従しにくくなり、例えば外周シール部材７６の一部のみが過度に潰れるなどして防水機能が失われることを抑制可能になる。 The head shell 77a is accommodated in the head accommodating portion 56a, the shaft portion 77b is accommodated in the shaft portion accommodating portion 56b, and the locking projection 77 is locked in the locking groove 56, whereby the shield shell 6 is connected to the device (for example, an inverter). When fixing to the housing, the housing 5 and the seal holding member 7 can be configured to be relatively movable. In the present embodiment, the seal holding member 7 is movable with respect to the housing 5 in the length direction, the width direction, and the height direction. With this configuration, even if the shield shell 6 or the housing 5 is rotated or inclined due to the bending of the electric wire 2 or the torque when the shield shell 6 is bolted, the seal holding member 7 follows the rotation or inclination. For example, it is possible to prevent the waterproof function from being lost due to excessive crushing of only a part of the outer peripheral seal member 76, for example.
（実施の形態の作用及び効果）
　以上説明したように、本実施の形態に係るコネクタ３では、電線２が挿通される挿通孔５１が形成され、挿通孔５１に挿通された電線２を挟持する電線２よりも硬い電線支持部５２を有するハウジング５と、電線支持部５２の周囲に設けられたナノ結晶軟磁性材料からなる環状の磁性体コア８と、を備えている。 (Operation and effect of the embodiment)
As described above, in the connector 3 according to the present embodiment, the insertion hole 51 through which the electric wire 2 is inserted is formed, and the electric wire support portion 52 that is harder than the electric wire 2 that sandwiches the electric wire 2 inserted through the insertion hole 51. And an annular magnetic core 8 made of a nanocrystalline soft magnetic material provided around the electric wire support 52.
　ナノ結晶軟磁性材料からなる環状の磁性体コア８を用いることで、従来用いていたフェライトコア等と比較して磁性体コア８を小型化し、コネクタ３を大型化させることなく、コネクタ３に磁性体コア８を搭載することが可能になる。 By using the annular magnetic core 8 made of a nanocrystalline soft magnetic material, the magnetic core 8 is downsized compared to the conventionally used ferrite core and the like, and the connector 3 is made magnetic without increasing the size of the connector 3. It becomes possible to mount the body core 8.
　また、電線２よりも硬い電線支持部５２の周囲に磁性体コア８を設ける構成とすることで、電線２が屈曲された際等に磁性体コア８に負荷がかからないようし、磁性体コア８の磁気特性の変化を抑制することが可能になる。 Further, by providing the magnetic core 8 around the electric wire support 52 that is harder than the electric wire 2, the magnetic core 8 is prevented from being loaded when the electric wire 2 is bent. It is possible to suppress a change in the magnetic characteristics of the.
　コネクタ３に磁性体コア８を内蔵することで、従来のようにフェライトコア等からなる磁性体コアをコネクタ３外に設けていた場合のように、磁性体コアを車体等に固定する必要がなくなるので、ワイヤハーネス１の配策レイアウトの自由度を向上させることが可能になる。また、フェライトコア等の磁性体コアを車体等に固定するための専用の固定部材が不要となるため、部品点数を抑え、ワイヤハーネス１を取り付ける際の作業性も向上させることが可能になる。 By incorporating the magnetic core 8 in the connector 3, it is not necessary to fix the magnetic core to the vehicle body or the like as in the case where a magnetic core made of a ferrite core or the like is provided outside the connector 3 as in the prior art. Therefore, it becomes possible to improve the freedom degree of the layout of the wire harness 1. In addition, since a dedicated fixing member for fixing the magnetic body core such as a ferrite core to the vehicle body or the like is not required, the number of parts can be reduced and workability when attaching the wire harness 1 can be improved.
　すなわち、本実施の形態によれば、磁性体コア８の磁気特性の変化を抑制し、電磁ノイズを確実に低減しつつも、配策レイアウトの自由度を向上でき、かつ部品点数を抑えることが可能なコネクタ３およびワイヤハーネス１を実現できる。 That is, according to the present embodiment, it is possible to improve the degree of freedom in the layout of the layout and to suppress the number of parts while suppressing the change in the magnetic characteristics of the magnetic core 8 and reliably reducing the electromagnetic noise. Possible connector 3 and wire harness 1 can be realized.
（実施の形態のまとめ）
　次に、以上説明した実施の形態から把握される技術思想について、実施の形態における符号等を援用して記載する。ただし、以下の記載における各符号等は、特許請求の範囲における構成要素を実施の形態に具体的に示した部材等に限定するものではない。 (Summary of embodiment)
Next, the technical idea grasped from the embodiment described above will be described with reference to the reference numerals in the embodiment. However, the reference numerals and the like in the following description do not limit the constituent elements in the claims to members or the like specifically shown in the embodiment.
［１］電線（２）の端部に設けられるコネクタ（３）であって、前記電線（２）が挿通される挿通孔（５１）が形成され、前記挿通孔（５１）に挿通された前記電線（２）を挟持する前記電線（２）よりも硬い電線支持部（５２）を有するハウジング（５）と、前記電線支持部（５２）の周囲に設けられたナノ結晶軟磁性材料からなる環状の磁性体コア（８）と、を備えた、コネクタ（３）。 [1] A connector (3) provided at an end of an electric wire (2), wherein an insertion hole (51) through which the electric wire (2) is inserted is formed, and the insertion hole (51) is inserted through the insertion hole (51). A housing (5) having a wire support portion (52) that is harder than the wire (2) that sandwiches the wire (2), and a ring made of a nanocrystalline soft magnetic material provided around the wire support portion (52) A magnetic core (8), a connector (3).
［２］前記磁性体コア（８）は、前記電線支持部（５２）よりも前記電線（２）の長手方向に突出しないように設けられている、［１］に記載のコネクタ（３）。 [2] The connector (3) according to [1], wherein the magnetic core (8) is provided so as not to protrude in the longitudinal direction of the electric wire (2) from the electric wire support portion (52).
［３］前記ハウジング（５）は、前記電線支持部（５２）との間で前記磁性体コア（８）を挟み込むように、前記電線支持部（５２）と前記磁性体コア（８）とを覆うように設けられた筒状の外壁部（５３）と、前記磁性体コア（８）よりも前記電線（２）の先端側で前記外壁部（５３）と前記電線支持部（５２）とを連結する連結部（５４）と、を有する、［１］または［２］に記載のコネクタ（３）。 [3] The housing (5) includes the electric wire support (52) and the magnetic core (8) so as to sandwich the magnetic core (8) between the electric wire support (52). A cylindrical outer wall portion (53) provided to cover the outer wall portion (53) and the electric wire support portion (52) on the distal end side of the electric wire (2) with respect to the magnetic core (8). The connector (3) according to [1] or [2], including a connecting portion (54) to be connected.
［４］前記外壁部（５３）の周囲を覆うように設けられた筒状のシールドシェル（６）を備え、前記シールドシェル（６）の前記電線（２）の延出側の端部に、内方に突出し前記磁性体コア（８）の前記電線（２）の延出側への移動を規制する抜け止め部（６３）が形成されている、［３］に記載のコネクタ（３）。 [4] A cylindrical shield shell (6) provided so as to cover the periphery of the outer wall portion (53) is provided, and at the end of the shield shell (6) on the extension side of the electric wire (2), The connector (3) according to [3], in which a retaining portion (63) that protrudes inward and restricts the movement of the magnetic core (8) to the extension side of the electric wire (2) is formed.
［５］前記ハウジング（５）は、前記電線支持部（５２）を複数備え、当該複数の電線支持部（５２）により複数の前記電線（２）を支持するように構成され、前記磁性体コア（８）は、前記複数の電線支持部（５２）を一括して覆うように設けられている、［１］乃至［４］の何れか１項に記載のコネクタ（３）。 [5] The housing (5) includes a plurality of the wire support portions (52), and is configured to support the plurality of wire (2) by the plurality of wire support portions (52). (8) The connector (3) according to any one of [1] to [4], wherein the connector (3) is provided so as to collectively cover the plurality of electric wire support portions (52).
［６］電線（２）と、［１］乃至［５］の何れか１項に記載のコネクタ（３）と、を備えた、ワイヤハーネス（１）。 [6] A wire harness (1) comprising an electric wire (2) and the connector (3) according to any one of [1] to [5].
　以上、本発明の実施の形態を説明したが、上記に記載した実施の形態は特許請求の範囲に係る発明を限定するものではない。また、実施の形態の中で説明した特徴の組合せの全てが発明の課題を解決するための手段に必須であるとは限らない点に留意すべきである。 As mentioned above, although embodiment of this invention was described, embodiment described above does not limit the invention which concerns on a claim. In addition, it should be noted that not all the combinations of features described in the embodiments are essential to the means for solving the problems of the invention.
　本発明は、その趣旨を逸脱しない範囲で適宜変形して実施することが可能である。 The present invention can be appropriately modified and implemented without departing from the spirit of the present invention.
　例えば、上記実施の形態では、ハウジング５の電線支持部５２と外壁部５３との間の空間に磁性体コア８を配置したが、これに限らず、例えば、磁性体コア８を電線支持部５２とシールドシェル６の筒状部６１とで挟み込む構成としてもよい。ただし、外壁部５３は圧入されるシールドシェル６を保持する機能を果たしているため、圧入によりシールドシェル６を設ける場合には、電線支持部５２と外壁部５３との間に磁性体コア８を配置することが望ましいといえる。 For example, in the above embodiment, the magnetic core 8 is disposed in the space between the electric wire support portion 52 and the outer wall portion 53 of the housing 5, but the present invention is not limited thereto. And the cylindrical portion 61 of the shield shell 6 may be sandwiched. However, since the outer wall portion 53 functions to hold the shield shell 6 that is press-fitted, when the shield shell 6 is provided by press-fitting, the magnetic core 8 is disposed between the wire support portion 52 and the outer wall portion 53. It is desirable to do.
　また、本実施の形態では、電線２が３本である場合を説明したが、電線２の本数は限定されず、例えば、電線２が１本、２本、または４本以上であってもよい。 Moreover, although the case where the number of the electric wires 2 is three was demonstrated in this Embodiment, the number of the electric wires 2 is not limited, For example, the number of the electric wires 2 may be one, two, or four or more. .
１…ワイヤハーネス
２…電線
３…コネクタ
４…編組シールド
５…ハウジング
５１…挿通孔
５２…電線支持部
５３…外壁部
５４…連結部
６…シールドシェル
７…シール保持部材
８…磁性体コア DESCRIPTION OF SYMBOLS 1 ... Wire harness 2 ... Electric wire 3 ... Connector 4 ... Braided shield 5 ... Housing 51 ... Insertion hole 52 ... Electric wire support part 53 ... Outer wall part 54 ... Connection part 6 ... Shield shell 7 ... Seal holding member 8 ... Magnetic body core

Claims (6)

  1. 　電線の端部に設けられるコネクタであって、
    　前記電線が挿通される挿通孔が形成され、前記挿通孔に挿通された前記電線を挟持する前記電線よりも硬い電線支持部を有するハウジングと、
    　前記電線支持部の周囲に設けられたナノ結晶軟磁性材料からなる環状の磁性体コアと、を備えた、
    　コネクタ。     A connector provided at an end of an electric wire,
    A housing having an insertion hole through which the electric wire is inserted, and a wire support portion that is harder than the electric wire that sandwiches the electric wire inserted through the insertion hole;
    An annular magnetic core made of a nanocrystalline soft magnetic material provided around the electric wire support,
    connector.
  2. 　前記磁性体コアは、前記電線支持部よりも前記電線の長手方向に突出しないように設けられている、
    　請求項１に記載のコネクタ。     The magnetic core is provided so as not to protrude in the longitudinal direction of the electric wire from the electric wire support portion.
    The connector according to claim 1.
  3. 　前記ハウジングは、
    　前記電線支持部との間で前記磁性体コアを挟み込むように、前記電線支持部と前記磁性体コアとを覆うように設けられた筒状の外壁部と、
    　前記磁性体コアよりも前記電線の先端側で前記外壁部と前記電線支持部とを連結する連結部と、を有する、
    　請求項１または２に記載のコネクタ。     The housing is
    A cylindrical outer wall provided to cover the wire support and the magnetic core so as to sandwich the magnetic core between the wire support and
    A connecting portion that connects the outer wall portion and the wire support portion on the distal end side of the electric wire with respect to the magnetic core;
    The connector according to claim 1 or 2.
  4. 　前記外壁部の周囲を覆うように設けられた筒状のシールドシェルを備え、
    　前記シールドシェルの前記電線の延出側の端部に、内方に突出し前記磁性体コアの前記電線の延出側への移動を規制する抜け止め部が形成されている、
    　請求項３に記載のコネクタ。     A cylindrical shield shell provided to cover the periphery of the outer wall portion,
    At the end of the shield shell on the extension side of the electric wire, a retaining portion that protrudes inward and restricts the movement of the magnetic core to the extension side of the electric wire is formed,
    The connector according to claim 3.
  5. 　前記ハウジングは、前記電線支持部を複数備え、当該複数の電線支持部により複数の前記電線を支持するように構成され、
    　前記磁性体コアは、前記複数の電線支持部を一括して覆うように設けられている、
    　請求項１乃至４の何れか１項に記載のコネクタ。     The housing includes a plurality of the wire support portions, and is configured to support the plurality of wires by the plurality of wire support portions,
    The magnetic core is provided so as to collectively cover the plurality of electric wire support portions.
    The connector according to any one of claims 1 to 4.
  6. 　電線と、
    　請求項１乃至５の何れか１項に記載のコネクタと、を備えた、
    　ワイヤハーネス。     Electric wires,
    A connector according to any one of claims 1 to 5,
    Wire harness.
PCT/JP2015/079054 2015-10-14 2015-10-14 Connector and wire harness WO2017064772A1 (en)

Priority Applications (3)

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JP2017545036A JP6458875B2 (en) 2015-10-14 2015-10-14 Connector and wire harness
US15/765,380 US10637197B2 (en) 2015-10-14 2015-10-14 Connector and wire harness

Applications Claiming Priority (1)

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